Hybridized Guided-Mode Resonances via Colloidal Plasmonic Self-Assembled Grating.

ABSTRACT: For many photonic applications, it is important to confine light of a specific wavelength at a certain volume of interest at low losses. So far, it is only possible to use the polarized light perpendicular to the solid grid lines to excite waveguide-plasmon polaritons in a waveguide-supported hybrid structure. In our work, we use a plasmonic grating fabricated by colloidal self-assembly and an ultrathin injection layer to guide the resonant modes selectively. We use gold nanoparticles self-assembled in a linear template on a titanium dioxide (TiO₂) layer to study the dispersion relation with conventional ultraviolet-visible-near-infrared spectroscopic methods. Supported with finite-difference in time-domain simulations, we identify the optical band gaps as hybridized modes: plas

SUBMITTER: Sarkar S 

PROVIDER: S-EPMC6463243 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature